EOD Regional Nodes
Notes
**Note 1:** For head and neck schemas, this field includes all lymph nodes defined as Levels I-VII and Other by TNM.
**Note 2:** If laterality of lymph nodes is not specified, assume nodes are ipsilateral. Midline nodes are ipsilateral.
**Note 3:** Supraclavicular lymph nodes can be either Level IV or Level V
* Level IV: deep to the sternocleidomastoid muscle, in the lower jugular chain
* Level V: in the posterior triangle, inferior to the transverse cervical artery, supraclavicular lymph nodes, NOS
**Note 4:** Code 800 if regional lymph nodes are involved, but there is no indication which ones are involved.
| Code |
Description |
SS2018 N |
| 000 |
No regional lymph node involvement |
NONE |
| 300 |
Level I
- Level IA - Submental
- Level IB - Submandibular (submaxillary), sublingual
Level II - Upper jugular
- Jugulodigastric (subdigastric)
- Upper deep cervical
- Level IIA - Anterior
- Level IIB - Posterior
Level III - Middle jugular
- Middle deep cervical
Level IV - Lower jugular
- Jugulo-omohyoid (supraomohyoid)
- Lower deep cervical
- Virchow node
Level V - Posterior triangle group
- Posterior cervical
- Level VA - Spinal accessory
- Level VB - Transverse cervical, supraclavicular
Level VI - Anterior compartment group
- Laterotracheal
- Paralaryngeal
- Paratracheal - above suprasternal notch
- Perithyroidal
- Precricoid (Delphian)
- Prelaryngeal
- Pretracheal - above suprasternal notch
- Recurrent laryngeal
Level VII - Superior mediastinal group (for other mediastinal node(s), see EOD Mets)
- Esophageal groove
- Paratracheal - below suprasternal notch
- Pretracheal - below suprasternal notch
Other groups
- Cervical, NOS
- Deep cervical, NOS
- Facial
+ Buccinator (buccal)
+ Mandibular
+ Nasolabial
- Internal jugular, NOS
- Parapharyngeal
- Parotid
+ Infraauricular
+ Intraparotid
+ Periparotid
+ Preauricular
- Retroauricular (mastoid)
- Retropharyngeal
- Suboccipital |
RN |
| 800 |
Regional lymph node(s), NOS
Lymph node(s), NOS |
RN |
| 999 |
Unknown; regional lymph node(s) not stated
Regional lymph node(s) cannot be assessed
Not documented in medical record
Death Certificate Only |
U |
(1) Fritz AG, Ries LAG (eds). **SEER Extent of Disease 1988: Codes and Coding Instructions (3rd Edition, 1998)**, National Cancer Institute, NIH Pub. No. 98-2313, Bethesda, MD, 1998
(2) Young JL Jr, Roffers SD, Ries LAG, Fritz AG, Hurlbut AA (eds.). **SEER Summary Staging Manual-2000: Codes and Coding Instructions**, National Cancer Institute, NIH Pub. No. 01-4969, Bethesda, MD, 2001.
(3) Collaborative Stage Work Group of the American Joint Committee on Cancer. **Collaborative Stage Data Collection System User Documentation and Coding Instructions, version 02.05**. American Joint Committee on Cancer (Chicago, IL)
(4) Gress, D.M., Edge, S.B., Gershenwald, J.E., et al. **Principles of Cancer Staging**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017
(5) Lydiatt, W.M., Patel, S.G., Shah, J.P., et al. **Staging Head and Neck Cancers**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017
(6) Lydiatt, W.M., Brandwein-Gensler, M., Shah, J.P., et al. **Mucosal Melanoma of the Head and Neck**. In: Amin, M.B., Edge, S.B., Greene, F.L., et al. (Eds.) AJCC Cancer Staging Manual. 8th Ed. New York: Springer; 2017
